Relative Colleen Jones tells the magazine the baby is fine and Bristol is "doing well." Jones is a sister of Bristol's grandmother.

The father is Levi Johnston, a former hockey player at Alaska's Wasilla High School. Sherry Johnston, Levi's mother, said in October that Bristol and her son were considering a summer wedding.

Johnston's mother was arrested on felony drug charges this month after state troopers served a search warrant at her Wasilla home. Authorities said she sent text messages to two police informants in which she discusses making drug transactions involving OxyContin, a strong prescription painkiller.

In October, Levi Johnston told the Associated Press that he and Bristol loved each other and wanted to get married. Johnston, who dropped out of high school to take a job on the North Slope oil fields as an apprentice electrician, said he was a little shocked to learn that Bristol was pregnant but quickly warmed to the idea of being a father.

He said the two had planned to get married even before Bristol became pregnant.

The announcement that the unmarried Bristol, 17 at the time, was pregnant immediately drew concerns that it could damage Palin's credibility as a religious conservative. But many observers noted the pregnancy served to humanize the Palins and showcase the candidate's rejection of abortion.

The governor's office said it would not release information because it considers the baby's birth a private, family matter. Palin family members, hospital employees and representatives for the governor's former running mate, John McCain, would not confirm the birth or did not return messages from the Associated Press.